books.google.comhttps://books.google.com/books/about/A_study_of_the_Harappan_pottery_in_compa.html?id=E9y1AAAAIAAJ&utm_source=gb-gplus-shareA study of the Harappan pottery, in comparison with the pre-Harappan and the post-Harappan ceramic industries of the Indian Sub-continent